I don't think its what you pay for something makes you look after it better Take some of these kids they get games consoles,games and the like bought for them,then when a new improved version comes out they have that one.What happens to the other one chucked in the corner,certain people cherish stuff be it animal or mineral.
All we can do is try and vet owners as best we can,my ferrets I sell will(Hopefully)be looked after just as good as one that somebody paid £20 for as we never know 100% who we sell to.Because I sell mine for a fiver dosen't mean i don't care where or who they go to.....